Burner



F. N. BIERCE Jan, 2@, 1925.

BURNER 2 Sheets-Sheet 1 Filed Nov, 22, 1922 //VVENT'Q1 3am: N. Emacs I 1,523,576 F. N. BIERCE BURNER Filed Nov. 22. 1922 Q'SheetB-Sheet 2 //V VENTQIQ FRED N.B1zmcm 'h? ll",

Patented Jan. 20, 1925.

UNITED STATES FRED N. BIERCE, OF CINCINNATI, OHIO.

BURNER.

Application filed November 22, 1922. Serial No. 602,642.

To (ZZZ whom it may concern:

Be it known that I, FRED N. BIERGE, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Burners, of which the following is a specification.

My invention relates to improvements in burners in which coal oil or kerosene is changed into gas and mixed with air, forming the proper fuel mixture.

The objects of my invention are to provide a simple, efficient, convenient, eco nomical and easily operated burner which may be used as occasion requires.

My invention consists in the parts and in the combination and arrangement of parts as herein set forth and claimed.

In the drawings:

Fig. 1 is a plan view of the invention, the generator being indicated by dotted lines;

Fig. 2 is a side elevation thereof;

.Fig. 3 is a perspective view of Fig. 2;

Fig. 1- is a perspective view of one of the burner plates; I

Fig. is a plan view of one of the asbestos insulating sheets which fits between the burner plates and the burner;

Fig. 6 is a vertical section on an enlarged scale taken on the line 6-6 of Fig. 5;

Fig. '7 is an enlarged vertical section taken on the line 7-7 of Fig. 1;

Fig. 8 is a plan view of a modified burner construction Fig. 9 is a side elevation of Fig. 8;

Fig. is a plan view of another modified burner construction;

Fig. 11 is a side elevation of Fig. 10; and

Fig. 12 is a longitudinal vertical section of the burner shown in Figs. 1, 2 and 3, respectively, in connection with an oil tank and air pump.

in the embodiment of my invention as illustrated and which shows preferred constructions I provide a hollow metal casing 1 having air and gas mixing chamber 2 provided with air inlet 3. A tubular gas generator 4 having oil inlet 5 and provided with gas outlet 6 leading into said air and gas mixing chamber 2 is mounted over said gas mixing chamber 2.

The upper side of easing 1 is provided on each side with a series of slots 7 and 8 therethrough and in the center it is provided with a series of slots 9 to permit the exit of gas, Each upper side is covered with an asbestos insulating strip 10 having slots 11 registering with slots 7 and 8, respectively, and having flange 12 extending downwardly over the upper edge of side wall 13. Each asbestos strip is covered with flanged plates 1st having slots 15 registering with slots 7 and S. Asbestos wicks 16 are placed in grooves 17 at each end of slots 9 adjacent tubular gas generator 4: which is held in place by screw bolt 18. Oil tube 19 is con nected to generator at near one end thereof and extends into closed oil reservoir 20 to near the bottom thereof. Said reservoir is supplied with oil 21 leaving an air space 22 at the top to which is connected an air tube 23 leading to air pump 24 by which air pressure is obtained to force the oil into generator 4.

The asbestos strips are mounted upon the top side surfaces of the casing and are covered with said flanged plates 1 1 to prevent the upper side slotted surfaces of the casing from becoming excessively heated and thus produce back-firing within the mixing chamber 2. By mounting the slotted asbestos strips 10 thereover and having said strips covered by said slotted plates the mixture is directed upwardly and does not ignite until it reaches the upper surfaces of said plates which latter may become intensely heated without danger of backfiring. The central slots 9 are comparatively short and narrow forming reduced outlets for the purpose of emitting the gas mixture to produce a sufficient flame to heat the generator whereby the oil therein is converted into gas. The oil tube 19 is preferably formed of flexible metal such as brass and is preferably provided with a stop cook 25 to control the flow of oil from the reservoir to the generator.

By reference to Fig. 7 it will be seen that the upper wall 26 of casing 1 is adequately protected from overheating by asbestos strip 10 and that the gas from chamber 2 will pass upwardly through the slots past the asbestos before igniting thereby preventing the overheating of upper wall 26 and causing plates lt to become intensely heated without danger of backfiring into chamber 2.

As stated the asbestos strips prevent the side walls of the mixing chamber from overheating and the flame extends upwardly from the slotted plates which are intensely heated so that the proper flame producing perfect combustion of the gas mixer is soill) cured. Thecentral'slots orjets .-9 -dire.ctly beneath the tubular generator are short and very narrow thereby producing a flame -of less intensity so that while there :is suflicienb heat therefrom to convert the oil in the generator mounted thereover into gas there--is not enough heat produced to heat the adjacent wall sufliciently to produce back-firing.

The oil reservoir is .preferably provided with an air gage 27 to register the air presreservoir 20 is. admitted'into generator 1, through oil tube. 1 9thereby converting the oil into gas which is discharged intofchamher-"2 where it ismixed .with air admitted through airinletfi from the outside. The air and gas mixture thus formed pass'eslinto chamber 2' beneath the slotted burner outlets through which it passes andis ignited at the outer edge thereof by the flames from the wicks 16 togetherwith'the heat generated in the flanged plates 14 where it-burns to produce the required heat for the purposes intended: A suitable'stem 29 h'aving'handle' is provided for the purpose of" regulating the amount of flow of oil. If more' heat is desired a greater quantity ofoil is ad mitted and if less heat is desired the supply of the oil is correspondingly reduced' by' meansof. said stein. I

My novel burner is adaptedfor use in cook' stoves in which'I'prefertheifo-rms illustratedin Figs. 1, 2 and 3 and these burners may be readily applied to stovesof the usual construction for burning coal or wood; They may be easily and quickly installed and removed for the purpose of changing from one kind of fuel to the other.

The forms of burners shown in Figs. 8, 9, a v I slots register with each other to form gas 10 and 11 are for. use, in heating stoves of different shapes, Figs. 8 and 9 'being'intended for use in anloblonggheating stove anchFigs. 10 and 11in a circular heating c In the construction shown in Figs. lO'and 11 I provide two separate'burne'rs and '36,

respectively, each-having a mixing chamber 37, w1cks 38-and generator 39.

While; I have shown and described preferred constructions it will be apparent that still-further modifications of the invention ed, toregister with said first named fuel outlets and a metal plate mounted on said non-heat conducting means and having fuel outlets therethrough adapted to register with said previously mentioned fuel outlets, a gas generator, means to initially heat said gas generator and means to supply gas to said burner.

52; In a burner, a gas mixing-chamber having slotted burner outlets extending through.

the sides of the: top wall centrally disposed burner outlets in'said top wall slotted ,as-

bestos strips mounted over the sides of said upper wall,*slotted metal plates mounted over said slotted asbestos strips, a gas generator centrally lIlOUIli'JQd over said burner,

means to introduce oil to said generator,-

7 and" air mixing chamber, and having side adj acent said side slots, and slotted metal plates mounted over said asbestos'strips, respectively, whereby the respective side outlets.

luIn a burner, a metal casing having an and gas mixing chamber and'having burner outlets therefrom, asbestos strips mounted over said casing adjacent said burner outlets, metal strips mountedo-versald asbestos strip ad acent said outlets, a

generator mounted over said burner, means to init ally heat said generator and means to regulate the flow of gas from said gen-.-

erator tosa-id air and gas mixing chamber.

FRED N. BIERCE. 

